Roswell

In the mid to late 1990's, the United States Air
Force responded to a General Accounting Office inquiry regarding what has
become known as the "Roswell Incident" with two reports
explaining the Air Force's version of the events. The "Roswell
Incident" refers to witness accounts of debris from an
Unidentified Flying Object (UFO) and alien corpses from the alleged
UFO crash near the town of Roswell, New Mexico. The second of the
reports addresses the likelihood that the "alien corpses" seen
in the New Mexico desert were actually anthropomorphic dummies from
high-altitude parachute drops conducted with dummies from the Aero Medical
Laboratory at Wright Air Development Center. These two reports are
available on this site. Their executive summaries are available from
the U. S. Air Force's website. The links to these four resources are
below:

Air Force answer: Balloon Debris

The Air Force claims the debris likely came from the crash of a high altitude
balloon such as this one from the Wright Air Development Division.

Source: The Roswell Report: Case Closed

UFO Theorists' claim: Alien bodies found near
Roswell

Witnesses to the alleged crash(es) of alien ship(s)
near Roswell, New Mexico claimed that they saw alien bodies. These
bodies, according to the witnesses, were hairless, wore gray suits, and
didn't look like human beings. Witnesses also stated that the bodies
looked like dummies or plastic dolls.

Air Force's answer: Sierra Sam

The Air force explained these alien
sightings as being anthropomorphic dummies used in WADC's high altitude balloon
projects Excelsior and High Dive:

"In 1949, a contract was awarded to Sierra
Engineering Company of Sierra Madre, Calif., and deliveries began in
1950. This dummy quickly became known as "Sierra Sam".

In 1952, a contract for anthropomorphic dummies was
awarded to Alderson Research Laboratories, Inc., of New York City.
Dummies constructed by both companies possessed the same basic
characteristics: a skeleton of aluminum or steel, latex or plastic skin, a
cast aluminum skull, and an instrument cavity in the torso and head for
the mounting of strain gauges, accelerometers, transducer and rate
gyros. Models used by the Air Force were primarily parachute drop
and ejection seat versions with center of gravity tolerances within one
quarter inch.

Over the next several years the two companies
improved and redesigned internal structures and instrumentation, but
the basic external appearance of the dummies remained relatively constant
from the mid 1950s to the late 1960s. Dummies of these types
were most likely the "aliens" associated with the "Roswell
Incident". "(emphasis added)

Air Force answer: Injured Balloon Pilot

Capt. Dan D. Fulgham, days after a balloon mishap in
which his head was pinned beneath the balloon's gondola. The Air
Force claims that with his head injuries, described by his own colleague
as "grotesque", Capt. Fulgham was likely the source of the
reports of an alien walking into Walker Air Force Base hospital.